EP 4246678 A1 20230920 - END COVER ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS
Title (en)
END COVER ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS
Title (de)
ENDKAPPENANORDNUNG, BATTERIEZELLE, BATTERIE UND ELEKTRISCHE VORRICHTUNG
Title (fr)
ENSEMBLE COUVERCLE D'EXTRÉMITÉ, ÉLÉMENT DE BATTERIE, BATTERIE ET APPAREIL ÉLECTRIQUE
Publication
Application
Priority
- CN 202110876191 A 20210730
- CN 2022098445 W 20220613
Abstract (en)
This application relates to an end cover assembly (11), a battery cell (10), a battery (100), and an electric apparatus, and pertains to the field of battery manufacturing technologies. This application proposes an end cover assembly (11), including: a cover plate (111) provided with an electrode lead-out hole (1111); an electrode terminal (112) located on one side of the cover plate (111) in a thickness direction and covering the electrode lead-out hole (1111); and a sealing element (113) disposed between the electrode terminal (112) and the cover plate (111) so as to seal the electrode lead-out hole (1111) along a circumference of the electrode lead-out hole (1111). The sealing element (113) includes a body (1131) and a first insulating element (1132). The first insulating element (1132) is connected to the body (1131) and has a higher melting point than the body (1131). The first insulating element (1132) is configured to insulate the electrode terminal (112) from the cover plate (111) after the body (1131) is melted, so as to keep electrode terminals (112) of two polarities insulated from each other at thermal runaway of a battery cell (10). This application also proposes a battery cell (10), battery (100), and electric apparatus including such end cover assembly (11), all having good safety performance.
IPC 8 full level
H01M 50/188 (2021.01); H01M 50/184 (2021.01); H01M 50/198 (2021.01)
CPC (source: CN EP US)
H01M 10/052 (2013.01 - CN); H01M 50/15 (2021.01 - CN US); H01M 50/184 (2021.01 - EP); H01M 50/188 (2021.01 - CN EP US); H01M 50/191 (2021.01 - EP); H01M 50/198 (2021.01 - EP); H01M 50/249 (2021.01 - EP); H01M 50/586 (2021.01 - CN EP); H01M 50/593 (2021.01 - CN EP); H01M 50/597 (2021.01 - EP); H01M 10/052 (2013.01 - EP); H01M 50/15 (2021.01 - EP); H01M 2220/20 (2013.01 - CN EP); Y02E 60/10 (2013.01 - EP)
Citation (search report)
See references of WO 2023005463A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4246678 A1 20230920; CN 115693047 A 20230203; CN 115693047 B 20230915; CN 117477182 A 20240130; US 2023344047 A1 20231026; WO 2023005463 A1 20230202
DOCDB simple family (application)
EP 22848072 A 20220613; CN 202110876191 A 20210730; CN 2022098445 W 20220613; CN 202311098986 A 20210730; US 202318215850 A 20230629